Short answer
No single dose fits everyone. A common starting point is 10 to 20 mg of CBD per day, taken at the same hour, then raised by 5 mg every three to seven days until anxiety eases or side effects appear. Most people who respond settle between 25 mg and 75 mg per day. Clinical studies on anxiety have used 300 mg to 600 mg in single doses, so the research range sits well above what most people take at home.
Before you start
- Review your medications with a pharmacist. CBD slows the enzymes that clear some drugs, including blood thinners and seizure medicines.
- Confirm the product carries a certificate of analysis from an independent lab.
- Pick one product and one route, such as oil under the tongue, a capsule, or a gummy, so you can compare results.
- Keep a short log of dose, time, and anxiety level each day.
How to find your dose
- Start at 10 mg once per day. Take it at the same hour, with food if possible.
- Hold sublingual oil under your tongue for 60 to 90 seconds before swallowing. This speeds absorption.
- Wait four to six hours. Note any change in worry, sleep, or mood.
- Repeat the same dose for three days before changing anything.
- Raise by 5 mg if nothing changes. Small increases let you spot the dose that helps.
- Split the dose if you feel sleepy or lightheaded: 10 mg in the morning and 10 mg at night.
- Stop raising once anxiety drops or side effects start. Watch for dry mouth, diarrhea, and drowsiness.
- Review after two to three weeks. If 75 mg daily does nothing, CBD may not be the right fit for you.
What the research uses
Published trials on social anxiety disorder have given single doses of 300 mg, far above typical retail use. A 2019 review of CBD for anxiety and sleep found support for doses between 25 mg and 175 mg per day, with the largest effects at higher amounts. These numbers come from small studies, and results do not always carry over to daily life.
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Timing and form
Sublingual oils reach the bloodstream in 15 to 30 minutes and last four to six hours. Edibles and capsules take 60 to 90 minutes and last longer, often six to eight hours. Inhaled products act in minutes but fade in two to three hours. Match the form to the moment you need relief. For a steady baseline, most people choose oil or capsules on a fixed schedule.
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When to talk to a clinician
See a doctor if anxiety disrupts sleep, work, or relationships, if you take prescription medications, or if you are pregnant or breastfeeding. CBD is not FDA approved for anxiety. The FDA has approved one CBD medicine, and it treats specific seizure disorders, not anxiety.